hdrprobe is a single native binary that answers one question quickly:
what HDR and dynamic metadata does this file actually carry?

It does the work that normally requires mediainfo, ffprobe,
dovi_tool, and hdr10plus_tool together
without launching subprocesses in the hot path, writing temp files,
or extracting a full RPU stream to disk first.
It memory-maps the file and reads only the bytes it needs,
so it stays fast regardless of file size.